[ET Trac] [Einstein Toolkit] #713: Implement "Conformal Covariant Z4" formulation in McLachlan

[Einstein Toolkit]

#713: Implement "Conformal Covariant Z4" formulation in McLachlan
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  Reporter:  barry.wardell          |       Owner:             
      Type:  enhancement            |      Status:  reviewed_ok
  Priority:  major                  |   Milestone:             
 Component:  EinsteinToolkit thorn  |     Version:             
Resolution:                         |    Keywords:             
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Comment (by barry.wardell):

 My benchmarks uncovered a problem. It turns that the speed of a standard
 BSSN evolution is badly affected by this change. I think this is partially
 because there are extra partial derivatives which computed independently
 of whether they are actually used by a specific branch of the IfThen. I'll
 have a closer look at exactly what extra is computed after the changes and
 see if this can be optimised.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/713#comment:24>
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